variants
or less commonly sea floor
plural seafloors also sea floors
: the floor of a sea or ocean : seabed
The Earth's crust, in this view, is divided into several immense plates that make up the continents and seafloors, and that all float on a hot, plastic, subterranean "mantle."—
Walter Sullivan
Walter SullivanExamples of seafloor in a Sentence
Recent Examples on the Web
The little crab is thought to have been carried to the surface on a plastic bag pulled up from the seafloor during the August 2024 expedition.
—Daniel R. Depetris, Newsweek, 10 Jan. 2025
In the summer of 2023, archaeologists began to formulate a plan to raise the shipwreck from the seafloor.
—Sarah Kuta, Smithsonian Magazine, 8 Jan. 2025
The sample came from a part of the seafloor dating to the Late Pleistocene era, meaning the fossil was more than 11,700 years old, and could have been living during the last planetary ice age.
—Irene Wright, Miami Herald, 3 Jan. 2025
For that, the team used sonar instruments on the ship to make a high-resolution 3D map of the seafloor.
—Ashley Balzer Vigil, Ars Technica, 21 Dec. 2024
See all Example Sentences for seafloor 
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Daniel R. Depetris, Newsweek, 10 Jan. 2025
In the summer of 2023, archaeologists began to formulate a plan to raise the shipwreck from the seafloor.
—Sarah Kuta, Smithsonian Magazine, 8 Jan. 2025
The sample came from a part of the seafloor dating to the Late Pleistocene era, meaning the fossil was more than 11,700 years old, and could have been living during the last planetary ice age.
—Irene Wright, Miami Herald, 3 Jan. 2025
For that, the team used sonar instruments on the ship to make a high-resolution 3D map of the seafloor.
—Ashley Balzer Vigil, Ars Technica, 21 Dec. 2024
See all Example Sentences for seafloor
Dictionary Entries Near seafloor
Cite this Entry
“Seafloor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seafloor. Accessed 18 Jan. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share